1425-mTORC1-Independent Glycogen Storage in TSC

Paper Talk · Aug 12, 2026 · 19m

This research study identifies a novel mTORC1-independent pathway that explains why TSC2 gene mutations cause more severe liver disease than TSC1 mutations in Tuberous Sclerosis Complex (TSC) patients. While both defects lead to the hyperactivation of the protein mTORC1, the researchers discovered that a lack of TSC2 creates an abundance of uncomplexed-TSC1, which triggers a specific chemical chain reaction. This unique axis involving KDM5A, METTL3, and GYS2 significantly increases glycogen storage in the liver, a process that accelerates the development of tumors and lesions. Experiments on…